Patrick Mallahan

Okay, I have two seperate apps running on the same Tomcat Server. I need to be able to get a variable from the previous jsp and verify it in an if statement in the second jsp. Here is what I have so far, but I am getting an error:

JSP 1
int userIDNumber = user.getUserID();

JSP 2
String uIDN = request.getParameter("userIDNumber"); int userIDNum = Integer.parseInt(uIDN); if(userIDNum>2||uIDN==null) { response.sendRedirect("http://www.google.com"); }

ERROR
java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at com.aga.forecast.utilities.ActionDispatcher.dispatcher(ActionDispatcher.java:34) at com.aga.forecast.module.InitialAction.execute(InitialAction.java:40) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683) at java.lang.Thread.run(Thread.java:534) Caused by: java.lang.NullPointerException at com.aga.forecast.utilities.DBConnection.getConnection(DBConnection.java:42) at com.aga.forecast.module.DAO.getEmployees(DAO.java:29) at com.aga.forecast.module.InitialAction.forecast(InitialAction.java:93) ... 36 more

for some reason it is not working. If you notice user ID hase to be less than 3 to access the second jsp, this is just a temp fix until I can get the second project to interact with the user database.

thanks

how can I compare two dates one being a java.sql.Date and the other being a Calendar? I need to do a while date1<=date2.

so i understand how to add to a greg cal but how to i convert it back to a sql.Date?

i hoping nobody would say that but oh well, I guess that is the only way. Is that the case?

How would I go about incrementing days with java.sql.Date? I need to increse an sql.Date by 7 but I dont know how to add to an sql.Date. Can someone help me please?

I want to generate two different types of HTML based on a drop down that was selected from a previous page. So basically like:

if String Ball.equals(requst.getParameter("variable")) { print string that contains HTML } else if String Ball.equals(requst.getParameter("variable2")) { print string that contains HTML }

that entire code would go in the JSP somewhere, I just dont know the syntax needed to print it out in the JSP. I know <%=variable %> prints a var but how do i print one using those test conditions?

future reference than, because this may actully help me a lot. How do I change the values in drop down 2 based on dropdown one without reloading the page?

but what if somone wanted multiple >2 drop downs?

Probably JavaScript since the data is going to be the same in the drop down lists. I just need an onClick event on a link that creates a similar drop down list.

If i want a user to be able to add another drop down box by clicking a button how would I do this?
[ July 19, 2005: Message edited by: Bear Bibeault ]

i am trying to compare two objects from seperate methods.

I am trying to do:

temp = names.getString("employee_name");

but it keeps giving me the error:

TIME.java:138: cannot resolve symbol symbol : method getString (java.lang.String) location: class java.util.Vector temp = (String)names.getString("employee_name");

can you not pull a string from a vector and put it into another string?

wow, it works so good, and its not even difficult to set up, thanks all.

thanks guys, i will try that